CN201297360Y

CN201297360Y - Large transmission ratio coaxial output reducer

Info

Publication number: CN201297360Y
Application number: CNU200820142379XU
Authority: CN
Inventors: 陈明江
Original assignee: TIANJIN SPEED REDUCER CO Ltd
Current assignee: TIANJIN SPEED REDUCER CO Ltd
Priority date: 2008-10-14
Filing date: 2008-10-14
Publication date: 2009-08-26
Anticipated expiration: 2018-10-14

Abstract

The utility model relates to a large transmission ratio coaxial output reducer which comprises a motor, a cycloid reducer and a coaxial gear reduction part. The coaxial output reducer is characterized in that spatial triangle arrangement is adopted between every two grades of gear reduction of the coaxial gear reduction part; a motor output shaft is fixedly connected on an eccentric bearing in the cycloid reducer; the box body of the cycloid reducer is fixedly connected with the box body of a coaxial gear reducer; the cycloid output shaft of the cycloid reducer is fixedly connected with an input small helical gear; the input small helical gear is meshed with an input helical gear; the input helical gear is fixedly installed on a middle helical gear shaft; the middle helical gear shaft is meshed with a middle helical gear; the middle helical gear is fixedly installed on an output helical gear shaft; an output helical gear is meshed with an output large helical gear fixedly installed on an output shaft; and the output shaft is coaxial with the motor output shaft. The coaxial output reducer has the advantages that a larger transmission ratio can be acquired, and the largest transmission ratio (i) of the coaxial output reducer equals to 10437; and compared with the prior reduction ratio, the reduction ratio of the coaxial output reducer is increased by about 50 times. Furthermore, the coaxial output reducer has the advantages of compact structure, small volume, high transmission accuracy and large transmission ratio, and can be applied to reducers of various mechanical devices used in metallurgy, mining, hoisting, light industry, chemical industry, transportation, building and the like.

Description

The coaxial output speed reducer of big speed ratio

Technical field

The utility model belongs to the speed reducer technical field, particularly relates to the coaxial output speed reducer of a kind of big speed ratio.

Background technique

Development along with modern industrial technology, technical performance and economic indicator to mechanical transmission have proposed more and more higher requirement, under this form, have velocity ratio big, obtained extensive use from the large speed ratio gear transmission speed reducer of advantages such as heavy and light, volume are little.At present, domestic known all kinds of large speed ratio speed reducers are that the employing driving of parallel axes is exported and with the shaft drive export structure, the speed reducer velocity ratio of said structure is big inadequately, does not satisfy the needs of modern industry sometimes mostly.

Summary of the invention

The utility model provides a kind of compact structure, volume is little, transmission accuracy is high and velocity ratio the is big coaxial output speed reducer of big speed ratio for solving the technical problem that exists in the known technology.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

The coaxial output speed reducer of a kind of big speed ratio mainly comprises: motor, cycloid speed reducer, coaxial deceleration part is characterized in that: the output shaft of described motor is connected by key on the capacity eccentric bearing in the cycloid speed reducer; Described coaxial deceleration part comprises input bevel pinion, input helical gear, middle helical gear, middle helical gear shaft, output helical gear, output helical gear shaft, coaxial helical speed reduction gear casing, output shaft and spring bearing adopt spatial triangle to arrange between the gear reductions at different levels; The cycloid speed reducer casing is located by seam, fastening piece is connected with coaxial helical speed reduction gear casing, the input bevel pinion is packed on the cycloid output shaft of cycloid speed reducer by key, input bevel pinion engagement input helical gear, the input helical gear is packed on the middle helical gear shaft by key and back-up ring, middle helical gear shaft is installed on the coaxial helical speed reduction gear casing by spring bearing, helical gear in the middle of the middle bevel pinion engagement of middle helical gear shaft, middle helical gear is packed on the output helical gear shaft by key and back-up ring, the output helical gear shaft is installed on the coaxial helical speed reduction gear casing by spring bearing, the output bevel pinion engagement output helical gear of output helical gear shaft, the output helical gear is packed on the output shaft by key, output shaft and motor output shaft are positioned on same the axis, output shaft is installed on the coaxial helical speed reduction gear casing by spring bearing, in the outside of the output terminal spring bearing of output shaft back-up ring is installed, oil sealing and oil seal cover.

The utility model can also adopt following technological scheme:

Described output shaft is solid output shaft.

Advantage and the good effect that the utlity model has are: because motor output shaft of the present utility model directly installs with the capacity eccentric bearing of cycloid speed reducer by key, saved coupling, make structure very compact, assemble efficient and convenient; Simultaneously by input bevel pinion and the engagement of input helical gear, middle helical gear shaft and the engagement of middle helical gear, output helical gear shaft and the engagement of output helical gear, can obtain bigger velocity ratio, its maximum transmission ratio is i=10437, and the reduction speed ratio of its reduction speed ratio and existing speed reducer has improved about 50 times.For the ease of user installation, the utility model is shaped on the lower margin hole on coaxial helical speed reduction gear casing.The utility model compact structure, volume is little, transmission accuracy is high and velocity ratio is big, and the utility model can be widely used in the speed reducer of various machinery such as metallurgy, mine, lifting, light merit, chemical industry, transportation and building.

Description of drawings

Fig. 1 is a deployed configuration schematic representation of the present utility model;

Fig. 2 is the side view of Fig. 1.

Among the figure: 1, motor; 1-1, motor output shaft; 1-1-1, key; 2, cycloid speed reducer; 2-1, capacity eccentric bearing; 2-2, cycloid speed reducer casing; The 2-3 cycloid wheel; 2-4, pin wheel housing; 2-5, cycloid output shaft; 2-5-1, key; 2-6, bearing pin; 3, coaxial deceleration part; 4, coaxial helical speed reduction gear casing; 5, input bevel pinion; 6, input helical gear; 7, key; 8, back-up ring; 9, middle helical gear shaft; 9-1, middle bevel pinion; 10, spring bearing; 11, middle helical gear; 12, key; 13, back-up ring; 14, output helical gear shaft; 14-1, output bevel pinion; 15, spring bearing; 16, output helical gear; 17, key; 18, output shaft; 19, spring bearing; 20, back-up ring; 21, oil sealing; 22, oil seal cover.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1 and Fig. 2, the coaxial output speed reducer of big speed ratio mainly comprises: motor 1, cycloid speed reducer 2, coaxial deceleration part 3; Described cycloid speed reducer is a mature technology, and it mainly comprises capacity eccentric bearing 2-1, cycloid speed reducer casing 2-2, cycloid wheel 2-3, pin wheel housing 2-4, cycloid output shaft 2-5, bearing pin 2-6; Motor output shaft 1-1 is connected by key 1-1-1 on the capacity eccentric bearing 2-1 in the cycloid speed reducer 2, described coaxial deceleration part comprises input bevel pinion 5, input helical gear 6, middle helical gear 11, middle helical gear shaft 9, output helical gear 16, output helical gear shaft 14, coaxial helical speed reduction gear casing 4, output shaft 18 and spring bearing (10,15,19), adopt spatial triangle to arrange between the gear reductions at different levels, adopt this mounting arrangement to save the space, dwindled volume, made structure compact more.Cycloid speed reducer casing 2-2 is connected with coaxial helical speed reduction gear casing 4 by seam location, fastening piece, thereby the cycloid wheel 2-3 of cycloid speed reducer 2 does swing by acting on of capacity eccentric bearing 2-1 and drives the bearing pin 2-6 that is packed on the cycloid output shaft 2-5 in the pin wheel housing 2-4, bearing pin 2-6 rotates cycloid output shaft 2-5; Input bevel pinion 5 is packed on the cycloid output shaft 2-5 of cycloid speed reducer 2 by key 2-5-1, input bevel pinion 5 engagement input helical gears 6, input helical gear 6 is packed on the middle helical gear shaft 9 by key 7 and back-up ring 8, middle helical gear shaft 9 is installed on the coaxial helical speed reduction gear casing 4 by spring bearing 10, helical gear 11 in the middle of the middle bevel pinion 9-1 engagement of middle helical gear shaft 9, middle helical gear 11 is packed on the output helical gear shaft 14 by key 12 and back-up ring 13, output helical gear shaft 14 is installed on the coaxial helical speed reduction gear casing 4 by spring bearing 15, the output bevel pinion 14-1 engagement output helical gear 16 of output helical gear shaft 14, output helical gear 16 is packed on the output shaft 18 by key 17, output shaft 18 is solid output shafts, and be positioned on same the axis with motor output shaft 1-1, output shaft 18 is installed on the coaxial helical speed reduction gear casing 4 by spring bearing 19, in the outside of the output terminal spring bearing 19 of output shaft 18 back-up ring 20 is installed, oil sealing 21 and oil seal cover 22.

Described motor can according to the motor that requires to prepare various functions as charged magnetic brake motor, anti-explosion motor, variable-frequency motor, actuating motor, various types of motors such as band encoder motor and stepping, described cycloid deceleration part and in-line gears deceleration part can be according to different power, and different speed ratios are matched arbitrarily.

Any direction is installed speed reducer for the convenience of the user, and the installation lower margin hole 4-1 of coaxial helical speed reduction gear casing 4 is designed to substantially horizontal.

Claims

1. coaxial output speed reducer of big speed ratio, mainly comprise: motor, cycloid speed reducer, coaxial deceleration part is characterized in that: the output shaft of described motor is connected by key on the capacity eccentric bearing in the cycloid speed reducer; Described coaxial deceleration part comprises input bevel pinion, input helical gear, middle helical gear, middle helical gear shaft, output helical gear, output helical gear shaft, coaxial helical speed reduction gear casing, output shaft and spring bearing adopt spatial triangle to arrange between the gear reductions at different levels; The cycloid speed reducer casing is located by seam, fastening piece is connected with coaxial helical speed reduction gear casing, the input bevel pinion is packed on the cycloid output shaft of cycloid speed reducer by key, input bevel pinion engagement input helical gear, the input helical gear is packed on the middle helical gear shaft by key and back-up ring, middle helical gear shaft is installed on the coaxial helical speed reduction gear casing by spring bearing, helical gear in the middle of the middle bevel pinion engagement of middle helical gear shaft, middle helical gear is packed on the output helical gear shaft by key and back-up ring, the output helical gear shaft is installed on the coaxial helical speed reduction gear casing by spring bearing, the output bevel pinion engagement output helical gear of output helical gear shaft, the output helical gear is packed on the output shaft by key, output shaft and motor output shaft are positioned on same the axis, output shaft is installed on the coaxial helical speed reduction gear casing by spring bearing, in the outside of the output terminal spring bearing of output shaft back-up ring is installed, oil sealing and oil seal cover.

2. the coaxial output speed reducer of big speed ratio according to claim 1 is characterized in that: described output shaft is solid output shaft.